If the average male never shaved, his beard would be 13 feet long when he died.

Men without hair on their chests are more likely to get cirrhosis of the liver than men with hair.

Men loose about 40 hairs a day. Women loose about 70 hairs a day.

The length from your wrist to your elbow is the same as the length of your foot.

Your heart beats 101,000 times a day. During your lifetime it will beat about 3 billion times and pump about 400 million litres (800 million pints) of blood.

Your mouth produces 1 litre (1.8 pints) of saliva a day.

On average, people can hold their breath for one minute. The world record is seven-and-a-half minutes.

The human head contains 22 bones. More on the head and brains

On average, you breathe 23,000 times a day.

On average, you speak almost 5,000 words a day – although almost 80% of speaking is self-talk (talking to yourself).

Einstein’s brain was of average size (1375 grams – 49oz).

Over the last 150 years the average height of people in industrialised nations increased by 10 cm (4 in).

In the 19th century, American men were the tallest in the world, averaging 1,71m (5’6″). Today, the average height for American men is 1,75m (5’7″), compared to 1,77m (5’8″) for Swedes, and 1,78m (5’8.5″) for the Dutch.

If the amount of water in your body is reduced by just 1%, you’ll feel thirsty.

A person can live without food for about a month, but only about a week without water.

You’ll drink about 75,000 litres (20,000 gallons) of water in your lifetime.

After a certain period of growth, hair becomes dormant. That means that it is attached to the hair follicle until replaced by new hair.

Hair on the head grows for between two and six years before being replaced. In the case of baldness, the dormant hair was not replaced with new hair.